Analog signal to duty cycle conversion apparatus

Details Analog signal to duty cycle conversion apparatus Analog signal to duty cycle conversion apparatus

1975-09-22

1977-01-25

Smith, Jerry

Registers

Transfer mechanism

Traveling pawl

307271, 328185, 340347AD, G06G 716

Patent

active

040052842

ABSTRACT:
An analog signal to duty cycle converter and/or multiplier utilizing an integrator which integrates a composite of an input voltage and a feedback signal to produce a triangular waveform. The triangular waveform, depending upon the polarity of the input signal and the resultant voltage magnitude of the triangular waveform activates one of two sets of voltage sensitive switches for periodically applying feedback voltages to the integrator. If the feedback voltage sources are allowed to vary in amplitude, this variation affects the current or charge passed in the duty cycle obtained and effectively results in multiplication of the input signal times the feedback voltage source amplitude.

REFERENCES:
patent: 3482116 (1969-12-01), James
patent: 3484593 (1969-12-01), Schmoock et al.
patent: 3517339 (1970-06-01), Hubbard et al.
patent: 3539825 (1970-11-01), Hardaway
patent: 3588713 (1971-06-01), Yareck
patent: 3714470 (1973-01-01), Goldberg
patent: 3749942 (1973-07-01), Moses
patent: 3778794 (1973-12-01), Szabo et al.
D. F. Hoeschele, Jr., Analog-to-Digital/Digital-to-Analog Conversion Techniques, Wiley & Sons, Inc., 1968, pp. 356-357.

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